# Difference between revisions of "User:Erik"

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Name: [mailto:erik@sl1200.org Erik Hanson]<br> | Name: [mailto:erik@sl1200.org Erik Hanson]<br> | ||

Web: [http://sl1200.org/~erik/ http://sl1200s.org/~erik/]<br> | Web: [http://sl1200.org/~erik/ http://sl1200s.org/~erik/]<br> | ||

IRC: [ | IRC: [ircs://irc.libera.chat:6697 Libera Chat]<br> | ||

<math>\phi_n(\kappa) = \frac{1}{4\pi^2\kappa^2} \int_0^\infty \frac{\sin(\kappa R)}{\kappa R} \frac{\partial}{\partial R}\left[R^2\frac{\partial D_n(R)}{\partial R}\right]\,dR</math> | <math>\phi_n(\kappa) = \frac{1}{4\pi^2\kappa^2} \int_0^\infty \frac{\sin(\kappa R)}{\kappa R} \frac{\partial}{\partial R}\left[R^2\frac{\partial D_n(R)}{\partial R}\right]\,dR</math> |